Error with Ran out of input

[ccp123456]

I have fully followed the documentation for the relevant configuration, but when I tried to run the server with command ‘ python neuron_explainer/activation_server/main.py --model_name gpt2-small --port 8000’ ,an error occurred：
**magic_number = pickle_module.load(f, pickle_load_args)
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
EOFError: Ran out of input
How can I solve the above problem?